Pseudomonas - Gutierrez Flashcards
Does psuedomonas form spores?
no
Can pseudomonas spp ferment lactose?
No
Oxidase +
Pseudomonas are _________ pathogens
Opportunistic
What is the reservoir for pseudomonas?
Environment - water, soil, plants
Pseudomonas aeruginosa is associated with what predisposing factors?
- Trauma, burns, wounds
- Malignancy
- Immunodeficiency
- Inbalance of microbiota
True or False: Pseudomonas is involved in primary disease
False, secondary to other causes
What is responsible for the blue- green color on culture of pseudomonas aeruginosa? What smell is associated?
Pyocyanin (siderophore), has a candy-sweet odor
What virulence factors are on the cell surface of pseudomonas aeruginosa?
Flagella, pili, LPS
What is responsible for the fluorescent green color on culture of pseudomonas aeruginosa?
Pyoverdin siderophore
What is responsible for the red-brown color on culture of pseudomonas aeruginosa?
Pyorubin siderophore
What is responsible for the brown/black color on culture of pseudomonas aeruginosa?
Pyomelanin siderophore
How is pseudomonas aeruginosa transmitted?
Indirect contact through contaminated tools, water bowls, bedding, thermometers, etc
What are the 3 stages involved in pseudomonas aeruginosa?
- Adherence + colonization
- Multiplication and growth (biofilm formation)
- Systemic disease
What toxins are involved in systemic pseudomonas aeruginosa disease?
LPS and EXOtoxin A
What happens during growth and multiplication of pseudomonas aeruginosa?
bio film is formed, quorum sensing, T3SS is expressed
How does pseudomonas aeruginosa adhere to host tissue?
Flagella and pili
What are the major pathologies associated with pseudomonas aeruginosa in many species of animals?
- Wound infections
- UTI
- Otitis externa + media
- Resp tract infection
pseudomonas aeruginosa can cause abortion in what species?
Horses and chinchillas